Baby Safety / Compounds / BIT

Is BIT safe for babies and kids?

Context-dependent for kids

(Babies-specific data is limited; this page draws from human pregnant context.) Pregnancy alters the metabolism and distribution of BIT, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

What is bit?

The IUPAC name is 1,2-benzisothiazol-3(2H)-one.

Also known as: 1,2-benzisothiazol-3(2H)-one, 1,2-benzisothiazolin-3-one, benzoisothiazole, Biobor JF.

IUPAC name
1,2-benzisothiazol-3(2H)-one
CAS number
2634-33-5
Molecular formula
C7H6NS
Molecular weight
135.2 g/mol
SMILES
C1=CC=C(C(=C1)C(=O)O)NC2=CC=CC=C2C(=O)O
PubChem CID
11371

Risk for babies

Context-dependent

Pregnancy alters the metabolism and distribution of BIT, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of BIT, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

2 regulatory and scientific bodies have classified BIT. The classifications differ — that's the data.

AgencyYearClassificationNotes
EU_CLP—Acute Tox. 3 (Oral); Skin Sens. 1H301 (Toxic if swallowed), H317 (May cause allergic skin reaction)
EU_BPR——Approved as active substance under PT6 and PT13; restricted to industrial use

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter bit

  • industrial water systems
  • metalworking fluids
  • cooling water
  • paints
  • coatings

Safer alternatives

Lower-risk approaches that achieve a similar outcome to BIT:

  • Physical preservation methods (UV treatment, filtration, controlled atmosphere)
    Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
    Relative cost: 1.2-2×
  • Naturally-derived antimicrobials (essential oil components at validated concentrations)
    Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
    Relative cost: 2-5× conventional
  • Hurdle technology combining multiple mild preservation methods
    Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.
    Relative cost: 1.2-2×

Frequently asked questions

What products contain bit?

BIT appears in: industrial water systems; metalworking fluids; cooling water.

See BIT in the baby app

Look up products containing bit, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)
  1. PubChem Compound CID 11371 — database
  2. ATSDR Toxicological Profile — CAS 2634-33-5 — reference

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →